Film blowing mold capable of adjusting film blowing thickness
By designing detachable and connected die head and die-out core in the blowing film mold, the problem of existing blowing machines requiring disassembly of multiple screws and components when adjusting the film thickness is solved, and fast and convenient film thickness adjustment is achieved.
Patent Information
- Application Number
- CN202421806158.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-07-29
AI Technical Summary
When adjusting the film thickness, existing film blowing machines need to disassemble multiple screws and components, which is time-consuming and labor-intensive, and the replacement process is complicated.
A blown film mold with adjustable blown film thickness is designed, allowing the core head to be rotated to adjust the film thickness without disassembly of too many parts by providing a removable connection between the die head and the die head core.
The function of quickly adjusting the film thickness is realized, reducing the time and labor during the replacement process and improving production efficiency.
Smart Images
Figure CN222538249U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of packaging bag production, in particular to a film blowing mould capable of adjusting the film blowing thickness. Background Art
[0002] A film blowing machine is a machine that heats and melts plastic particles and then blows them into a film. The quality of the film blown depends on the structure of the film blowing head of the film blowing machine. Therefore, film blowing machine manufacturers have very high requirements for the structure of the film blowing head during the research and development process. However, the thickness of the film blown out by the film blowing head of the general film blowing machine on the market currently depends on the distance between the inner wall of the mold cover and the mold core. When adjusting the thickness of the extruded film, it is necessary to release the screws between the multiple screws used to fix the mold cover and the mold barrel and the mold barrel, and then replace the mold cover corresponding to the inner wall diameter as needed to adjust the thickness of the extruded film. This replacement method requires the disassembly of too many parts, which is time-consuming and labor-intensive. Utility Model Content
[0003] The utility model aims to provide a film blowing mold capable of adjusting the thickness of the film blowing, so as to solve the problems raised in the above-mentioned background technology.
[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a blown film mold with adjustable blown film thickness, comprising a mold base, a mold barrel and a mold cover which are arranged in sequence from bottom to top, a mold core is arranged at the top of the mold base of the mold barrel, a mold core head is arranged at the top of the mold core, the mold cover and the mold base are respectively fixed to the upper and lower ends of the mold barrel by multiple screws, a die ejection core is integrally arranged at the top of the mold core head, a first connecting groove is arranged at the top of the mold core head, a first connecting head for threaded connection with the first connecting groove is arranged at the bottom of the die ejection core, and the top of the mold core head is fitted with and slidably connected to the bottom end of the die ejection core.
[0005] Furthermore, an annular limiting groove is provided at the top of the core head, and a limiting ring is integrally provided at the bottom end of the die head core, the outer wall of which is fitted and slidably connected to the inner wall of the annular limiting groove, and the inner wall diameter of the limiting ring cross section is larger than the outer wall diameter of the first connecting head cross section.
[0006] Furthermore, a second connecting groove is provided at the top end of the mold core, and a second connecting head for threaded connection with the second connecting groove is integrally provided at the bottom end of the mold core head.
[0007] Furthermore, a third connecting groove is provided at the top end of the mold base, and a third connecting head for threaded connection with the third connecting groove is integrally provided at the bottom end of the mold core.
[0008] Furthermore, the third connecting head is fixed to the mold base by a plurality of screws.
[0009] The beneficial effect achieved by the utility model is that by arranging a detachable connection between the die head core and the die core head, it is unnecessary to disassemble too many parts when adjusting the thickness of the extruded film, thereby achieving the effect of quickly adjusting the thickness of the extruded film. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a cross-sectional view of a film blowing mold with adjustable film blowing thickness in an embodiment. DETAILED DESCRIPTION
[0011] The utility model is further described below in conjunction with the accompanying drawings.
[0012] like Figure 1 As shown, the utility model discloses a blown film mold with adjustable blown film thickness, comprising: a mold base 1, a mold barrel 2 and a mold cover 3 which are arranged in sequence from bottom to top, a mold core 4 is arranged at the top of the mold base 1 located at the mold barrel 2, a mold core head 5 is arranged at the top of the mold core 4, the mold cover 3 and the mold base 1 are respectively fixed to the upper and lower ends of the mold barrel 2 by multiple screws, a die head core 6 is integrally arranged at the top of the mold core head 5, a first connecting groove 51 is arranged at the top of the mold core head 5, a first connecting head 61 for threaded connection with the first connecting groove 51 is arranged at the bottom of the die head core 6, and the top of the mold core head 5 is fitted with the bottom end of the die head core 6 and is slidably connected.
[0013] Based on the above structure, Figure 1 As shown, when the thickness of the extruded film needs to be adjusted, the core head 5 is rotated to drive the first connecting head 61 to rotate, thereby releasing the threaded connection between the first connecting head 61 and the first connecting groove 51. Thereafter, the core head 5 corresponding to the cross-sectional diameter is replaced as needed, and the new core head 5 is rotated to drive the first connecting head 61 at the bottom of the new core head 5 to be screwed into the first connecting groove 51.
[0014] Further, such as Figure 1 As shown, in order to prevent the connectivity between the core head and the first connecting head from being reduced due to external force, an annular limit groove 52 is provided at the top of the core head 5, and a limit ring 62 is integrally provided at the bottom end of the die head core 6, the outer wall of which is in contact with and slidably connected to the inner wall of the annular limit groove 52. The inner wall diameter of the cross section of the limit ring 62 is larger than the outer wall diameter of the cross section of the first connecting head 61. When the outer wall of the core head 5 is subjected to uneven external pressure, the limit caused by the annular limit groove 52 on the limit ring 62 further acts on the core head 5, thereby reducing the external pressure acting on the connection between the core head and the first connecting head.
[0015] Further, such as Figure 1As shown, in order to reduce maintenance costs, a second connecting groove 41 is provided at the top of the mold core 4, and a second connecting head 53 for threaded connection with the second connecting groove 41 is integrally provided at the bottom end of the mold core head 5. When the mold core head needs to be replaced, first release the threaded connection between the multiple screws used to fix the mold cover 3 and the mold cylinder 2 and the mold cylinder 2, and take out the mold cover 3, then release the threaded connection between the second connecting head 53 and the second connecting groove 41, and replace the new mold core head 5.
[0016] Further, such as Figure 1 As shown, in order to reduce maintenance costs, a third connecting groove 11 is provided at the top of the mold base 1, and a third connecting head 42 for threaded connection with the third connecting groove 11 is integrally provided at the bottom end of the mold core 4. When the mold core needs to be replaced, first release the threaded connection between the multiple screws used to fix the mold base 1 and the mold cylinder 2 and the mold cylinder 2, then release the threaded connection between the third connecting head 42 and the second connecting groove 41, take out the mold base 1, then release the threaded connection between the second connecting head 53 and the second connecting groove 41, and finally replace the new mold core 4.
[0017] Further, such as Figure 1 As shown, in order to increase the connection strength between the third connecting head 42 and the third connecting groove 11, the third connecting head 42 is fixed to the mold base 1 by a plurality of screws.
[0018] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.
Claims
1. A film blowing mold capable of adjusting the thickness of a film, comprising a mold base (1), a mold barrel (2) and a mold cover (3) arranged in sequence from bottom to top, a mold core (4) is arranged at the top of the mold base (1) located on the mold barrel (2), a mold core head (5) is arranged at the top of the mold core (4), the mold cover (3) and the mold base (1) are respectively fixed to the upper and lower ends of the mold barrel (2) by a plurality of screws, characterized in that: The top end of the core head (5) is integrally provided with a die head core (6), the top end of the core head (5) is provided with a first connecting groove (51), the bottom end of the die head core (6) is provided with a first connecting head (61) for threaded connection with the first connecting groove (51), and the top end of the core head (5) is fitted with and slidably connected to the bottom end of the die head core (6).
2. The film blowing mold with adjustable film blowing thickness according to claim 1, characterized in that: The top end of the core head (5) is provided with an annular limiting groove (52), and the bottom end of the die head core (6) is integrally provided with a limiting ring (62) whose outer wall is in contact with and slidably connected to the inner wall of the annular limiting groove (52), and the inner wall diameter of the cross section of the limiting ring (62) is greater than the outer wall diameter of the cross section of the first connector (61).
3. The film blowing mold with adjustable film blowing thickness according to claim 1, characterized in that: The top end of the mold core (4) is provided with a second connecting groove (41), and the bottom end of the mold core head (5) is integrally provided with a second connecting head (53) for threaded connection with the second connecting groove (41).
4. The film blowing mold with adjustable film blowing thickness according to claim 3, characterized in that: The top end of the mold base (1) is provided with a third connecting groove (11), and the bottom end of the mold core (4) is integrally provided with a third connecting head (42) for threaded connection with the third connecting groove (11).
5. The film blowing mold with adjustable film blowing thickness according to claim 4, characterized in that: The third connecting head (42) is fixed to the mold base (1) by means of a plurality of screws.